D&C FJS:ss
SECTION 333201
SEWAGE EJECTORS
PART 1 GENERAL
1.01RELATED WORK SPECIFIED ELSEWHERE
ADD OR DELETE AS REQUIRED.
A.Cast-In-Place Concrete: Section 033001.
B.Motors and Motor Controllers: Section 260221.
C.Wiring for Motors and Motor Controllers: Section 260523.
1.02SUBMITTALS
A.Product Data: Catalog sheets, performance charts, standard schematic drawings, specifications and installation instructions for sewage ejector.
B.Quality Control Submittals
1.Certificates: Certify that the unit has been factory tested in accordance with accepted practices of the Hydraulic Institute Standards Manual and that the characteristics of the ejector conforms to the performance curve published by the manufacturer for that class ejector.
C.Contract Closeout Submittals
1.Operation and Maintenance Data: Deliver 2 copies, covering the installed products, to the Director's Representative.
1.03MAINTENANCE
A.Extra Materials: Two grease guns and 6 cartridges of grease required for the ball and thrust guide bearings.
B.Special Tools: One set of factory made tools required for routine maintenance.
PART 2 PRODUCTS
2.01SEWAGE EJECTORS
A.Acceptable Manufacturers: Chicago Pump Company, Chicago, Illinois, Federal Pump Company, Brooklyn, New York, or Weil Pump Company, Chicago, Illinois.
B.Ejector
1.Casing and Castings: Cast iron.
2.Suspension Plate: Cast iron, ribbed for reinforcement.
3.Thrust Bearing: Ball bearing mounted above the suspension plate in a dustproof housing.
4.Guide Bearings: Cast bronze, renewable; one for each four feet of unsupported shaft length, plus one bearing located in the pump casing.
5.Shaft: Alloy steel, ground and polished to a tolerance of + 0.0000" - 0.0015".
6.Impeller: Cast iron, non-clog, one piece, balanced; keyed and locked to the shaft.
7.Impeller Adjusting Nuts: Bronze lock nuts.
8.Motor Shaft Connection: Flexible coupling, machined and balanced.
9.Discharge Pipe: Vertical, locked to the suspension plate, terminating in a flanged, 45 degrees elbow.
10.Suspension Leg: Cast iron with integral end flanges for each section.
11.Lubrication: Individual flexible copper grease lines for each guide bearing, terminating in a grease fitting above the suspension plate.
C.Motor Requirements (Supplementary to Section 16221):
1.Vertical mounting.
OMIT SUBPARAGRAPH BELOW IF A DRIPPROOF MOTOR IS ADEQUATE. SPECIFY EXPLOSION-PROOF WHEN APPROPRIATE.
2.Totally enclosed fan-cooled.
2.02PUMP CONTROLS AND ACCESSORIES
CHOOSE ONE OF 2 PARAGRAPHS BELOW. TO SUIT.
A.Liquid Level Control Device: Construct of corrosion resistant materials, with components designed for installation within the sump completely waterproof, including oil resistant grounding type power cord.
1.Type: Designed for remote installation. Furnish with stainless steel mounting clamps and stainless steel fasteners.
B.Liquid Level Control Device: Float switch, switching mechanism mounted in a NEMA 1 enclosure, cast iron floor stand, stainless steel push rod, moveable limit stops, 7 inch copper float.
CHANGE NEMA 1 TO NEMA 7 FOR EXPLOSION-PROOF APPLICATIONS.
C.High Liquid Alarm: Factory wired assembly consisting of a 4 inch alarm bell, transformer, warning light, silencing switch, housed in a NEMA-1 enclosure, and liquid level control actuated.
PARAGRAPH BELOW IS NOT USED WITH FLOAT SWITCH.
D.Control Panel: Factory wired, housed in a NEMA-1 enclosure; automatic electric alternator liquid level control actuated. Include motor controller, H-O-A switch, run light, and circuit breaker for each pump motor.
INCLUDE PARAGRAPH BELOW IF CONTROLLER TYPE IS NOT INDICATED ON THE DRAWINGS.
E.Motor Controller Requirements (Supplementary to Section 16221):
1.Motor Controller Type: Type B.
USE APPROPRIATE ONE OF TWO PARAGRAPHS BELOW FOR MOUNTING CONTROL PANEL.
F.Floor Stand: 1-1/2 inch angle iron, welded construction, not less than 48 inches high, rigidly braced, with flanged feet drilled for bolting to the floor. Provide 1-1/2 x 1-7/8 inch steel channel cross members spaced for mounting high water alarm and control panel.
G.Wall Panel: 3/4 inch plywood, APA grade A-D; exterior glue, plain sliced face veneer, finished, beveled edges all around. Construct of sufficient size for mounting high water alarm and control panel.
USE ARTICLE BELOW FOR PREFABRICATED SUMP. EDIT IF OTHER THAN CAST IRON.
2.03PREFABRICATED SUMP
A.Sump Basin: Cast iron, coal tar enamel coated, with hubbed inlets, and flanged top drilled and tapped for bolted cover.
IF GASTIGHT COVER REQUIRED, DELETE PARAGRAPH BELOW AND USE SECOND PARAGRAPH BELOW.
B.Basin Cover: Steel or cast iron, coal tar enamel coated and drilled for bolting to sump basin. Fabricate openings in cover for sewage ejector access, power cord and discharge pipe. Provide rubber grommet in cover to protect power cord.
C.Gastight Basin Cover: Steel or cast iron, gasketed, coal tar enamel coated, and drilled for bolting to sump basin. Fabricate openings in cover for sewage ejector access, power cord, vent connection and discharge pipe. Furnish sewage ejector access cover, pipe flanges, cord seal, gaskets, and bolts required to render cover gastight after connections are made.
USE ARTICLE BELOW FOR CONCRETE SUMP.
2.04SUMP COVER AND FRAME FOR CONCRETE SUMP
A.Cover: Steel or cast iron, coal tar enamel coated, with openings for sewage ejector access, power cord and discharge pipe. Provide rubber grommet in cover to protect power cord.
B.Frame: Steel, 1/2 inch minimum thickness, square shaped and provided with concrete anchors. Fabricate with recessed shoulder for flush mounting cover with finished floor.
2.05COVER THICKNESS SCHEDULE
Sump Size (inches)Round or Square / Minimum Cover Thickness (inches)
Steel Cast Iron
24 / 1/2 / 5/8
30 / 1/2 / 5/8
36 / 1/2 / 5/8
42 / 1/2 / 3/4
48 / 5/8 / 7/8
60 / 5/8 / 1
72 / 5/8 / 1
2.06PAINT
A.Ejectors:
1.Suspension Plate And All Parts Extending Above The Floor: Factory painted with metallic machinery enamel over a suitable primer; color-optional.
2.All Parts Extending Into The Sump: Factory painted with Alkyd modified asphalt paint over a suitable primer; color-optional.
B.Mounting Frame: Field paint mounting frame one coat enamel over a suitable primer; color-as directed.
PART 3 EXECUTION
3.01INSTALLATION
A.Install the Work of this Section in accordance with the manufacturer's printed installation instructions unless otherwise specified.
USE PARAGRAPH BELOW FOR SINGLE EJECTOR SYSTEMS USING A REMOTE LIQUID LEVEL CONTROL.
B.Install liquid level control device at proper elevation to produce specified sump drawdown. Secure control device to ejector discharge pipe with clamps or to side of sump basin with corrosion resistant brackets and fasteners.
C.High Water Alarm: Install high water alarm and make electrical connections. Install liquid level control device at proper elevation to activate alarm at specified liquid depth. Secure control device to ejector discharge pipe with clamps or to side of sump basin with corrosion resistant brackets and fasteners.
D.Control Panel: Install and make electrical connections. Install liquid level control devices at elevation required to produce specified sump drawdown. Secure control devices to ejector discharge pipe with clamps, or to side of sump basin with corrosion resistant brackets and fasteners.
USE ONE OF NEXT 2 PARAGRAPHS BELOW.
E.Floor Stand: Secure to floor with lag bolts and expansion shields.
F.Wall Panel: Mount wall panel where directed and secure with suitable fasteners.
EDIT PARAGRAPH BELOW AS REQUIRED. IF A CONCRETE SUMP IS REQUIRED, OMIT PARAGRAPH BELOW AND USE SECOND PARAGRAPH BELOW.
G.Sump: Install sump basin on a level firm base, make piping connections. Secure sump cover; seal gastight.
OMIT PARAGRAPH BELOW IF THERE IS A RELATED CONST. CONTRACT. COORDINATE WITH THE CONSTRUCTION SPECIFICATIONS WRITER.
H.Sump Frame: Install level at proper elevation.
I.Install sump cover.
3.02SEWAGE EJECTOR OPERATION
A.Set the controls to perform the following functions:
USE FIRST SUBPARAGRAPH BELOW FOR SINGLE EJECTOR; USE SECOND AND THIRD SUBPARAGRAPHS BELOW FOR DUPLEX EJECTORS.
1.Float Switch: Starts and stops the ejector at the selected water levels in the sump.
2.Float Switch: Starts and stops the lead ejector at the selected water levels in the sump.
3.Electric Alternator: Changes the lead-lag units after each operation and starts the lag unit if the water continues to rise in the sump after the lead unit was called on. Both units will run until low water level is reached.
4.High Water Alarm: Set to sense a pre-determined high water level in the sump and sound an alarm bell, and light the bulls-eye light. The alarm may be silenced manually using the relay, but the light remains on until the trouble is remedied and the water in the sump reaches a lower level. After the trouble has been remedied, the high water alarm automatically returns to the ready.
3.03FIELD QUALITY CONTROL
A.Test sewage ejector system for proper operation at specified liquid depths.
B.Test high liquid alarm for proper operation at specified liquid depth.
END OF SECTION
Updated 07/08/09
Printed 10/07/2018333201 - 1Project No.